"Fossies" - the Fresh Open Source Software Archive

Member "openssl-1.0.2r/doc/crypto/BN_mod_inverse.pod" (26 Feb 2019, 847 Bytes) of package /linux/misc/openssl-1.0.2r.tar.gz:

Caution: As a special service "Fossies" has tried to format the requested pod source page into HTML format but links to other pod pages may be missing or even errorneous. Alternatively you can here view or download the uninterpreted pod source code. A member file download can also be achieved by clicking within a package contents listing on the according byte size field. See also the last Fossies "Diffs" side-by-side code changes report for "BN_mod_inverse.pod": 1.1.0i_vs_1.1.1.


BN_mod_inverse - compute inverse modulo n


 #include <openssl/bn.h>

 BIGNUM *BN_mod_inverse(BIGNUM *r, BIGNUM *a, const BIGNUM *n,
           BN_CTX *ctx);


BN_mod_inverse() computes the inverse of a modulo n places the result in r ((a*r)%n==1). If r is NULL, a new BIGNUM is created.

ctx is a previously allocated BN_CTX used for temporary variables. r may be the same BIGNUM as a or n.


BN_mod_inverse() returns the BIGNUM containing the inverse, and NULL on error. The error codes can be obtained by ERR_get_error(3).


bn(3), ERR_get_error(3), BN_add(3)


BN_mod_inverse() is available in all versions of SSLeay and OpenSSL.